Square measure is a term used to describe the measurement of an AREA. It can be measured in three different units: ARE (3 letters), ACRE (4 letters), HECTARE (7 letters), and AREA (4 letters). ARE is the smallest unit, measuring 100 square meters, while ACRE is slightly larger, measuring 10, 000 square meters. HECTARE is the largest unit, measuring 10, 000 square meters, and AREA is a general term for any unit of measurement.